A309276 - cp's OEIS frontend

A309276 a(n) is the smallest divisor not yet in the sequence of 5T(n)= 5n(n-1)/2, where T(n) are the triangular numbers; n => 1.

n	a(n)
1	1
2	5
3	3
4	2
5	10
6	15
7	7
8	4
9	6
10	9
11	11
12	22
13	13
14	35
15	21
16	8
17	17
18	45
19	19
20	25
21	14
22	33
23	23
24	12
25	20
26	65
27	27
28	18
29	29
30	75
31	31
32	16
33	24
34	51
35	85
36	30
37	37
38	95
39	39
40	26
41	41
42	105
43	43
44	55
45	50
46	69
47	47
48	40
49	28
50	49
51	125
52	34
53	53
54	135
55	99
56	44
57	38
58	57
59	59
60	118
61	61
62	155
63	63
64	32
65	52
66	143
67	67
68	134
69	46
70	115
71	71

[1, 5, 3, 2, 10, 15, 7, 4, 6, 9, 11, 22, 13, 35, 21, 8, 17, 45, 19, 25, 14, 33, 23, 12, 20, 65, 27, 18, 29, 75, 31, 16, 24, 51, 85, 30, 37, 95, 39, 26, 41, 105, 43, 55, 50, 69, 47, 40, 28, 49, 125, 34, 53, 135, 99, 44, 38, 57, 59, 118, 61, 155, 63, 32, 52, 143, 67, 134, 46, 115, 71]

cp's OEIS Frontend

A309276 a(n) is the smallest divisor not yet in the sequence of 5T(n)= 5n(n-1)/2, where T(n) are the triangular numbers; n => 1.

Table of values

List of values

n	a(n)
1	1
2	5
3	3
4	2
5	10
6	15
7	7
8	4
9	6
10	9
11	11
12	22
13	13
14	35
15	21
16	8
17	17
18	45
19	19
20	25
21	14
22	33
23	23
24	12
25	20
26	65
27	27
28	18
29	29
30	75
31	31
32	16
33	24
34	51
35	85
36	30
37	37
38	95
39	39
40	26
41	41
42	105
43	43
44	55
45	50
46	69
47	47
48	40
49	28
50	49
51	125
52	34
53	53
54	135
55	99
56	44
57	38
58	57
59	59
60	118
61	61
62	155
63	63
64	32
65	52
66	143
67	67
68	134
69	46
70	115
71	71

n	a(n)
1	1
2	5
3	3
4	2
5	10
6	15
7	7
8	4
9	6
10	9
11	11
12	22
13	13
14	35
15	21
16	8
17	17
18	45
19	19
20	25
21	14
22	33
23	23
24	12
25	20
26	65
27	27
28	18
29	29
30	75
31	31
32	16
33	24
34	51
35	85
36	30
37	37
38	95
39	39
40	26
41	41
42	105
43	43
44	55
45	50
46	69
47	47
48	40
49	28
50	49
51	125
52	34
53	53
54	135
55	99
56	44
57	38
58	57
59	59
60	118
61	61
62	155
63	63
64	32
65	52
66	143
67	67
68	134
69	46
70	115
71	71

cp's OEIS Frontend

A309276 a(n) is the smallest divisor not yet in the sequence of 5*T(n)= 5*n(n-1)/2, where T(n) are the triangular numbers; n => 1.

Table of values

List of values

A309276 a(n) is the smallest divisor not yet in the sequence of 5T(n)= 5n(n-1)/2, where T(n) are the triangular numbers; n => 1.

n	a(n)
1	1
2	5
3	3
4	2
5	10
6	15
7	7
8	4
9	6
10	9
11	11
12	22
13	13
14	35
15	21
16	8
17	17
18	45
19	19
20	25
21	14
22	33
23	23
24	12
25	20
26	65
27	27
28	18
29	29
30	75
31	31
32	16
33	24
34	51
35	85
36	30
37	37
38	95
39	39
40	26
41	41
42	105
43	43
44	55
45	50
46	69
47	47
48	40
49	28
50	49
51	125
52	34
53	53
54	135
55	99
56	44
57	38
58	57
59	59
60	118
61	61
62	155
63	63
64	32
65	52
66	143
67	67
68	134
69	46
70	115
71	71